METHOD FOR MOLDING PLASTIC AND ITS APPARATUS

摘要

PROBLEM TO BE SOLVED: To make a substrate both inner and outer peripheral parts of which have a uniform transfer property be obtained by molding with an insulating effect by an insulating part or layer changed corresponding to the position in a cavity. SOLUTION: A ceramic insulating material 13 is used, and its thickness is changed to increase corresponding to the distance from from a gate. The material 13 is fixed to a movable core 5 with an epoxy adhesive. In this way, the temperature of the interface between it and a stamper 4 immediately after resin packing is more than or equal to the heat distortion temperature of a resin even in the peripheral part of a substrate in which the temperature of the molten resin immediately after packing becomes lower than that of the inner peripheral part of the substrate close to a gate, and the temperatures of the inner peripheral part of the substrate and the outer peripheral part become the same. A good transfer property is obtained in both inner and outer peripheral parts by molding by such a molding mold.